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Cash, Cash Equivalents, and Restricted Cash - Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Cash And Cash Equivalents [Abstract]        
Cash and cash equivalents $ 35,497 $ 13,273 $ 19,210  
Restricted cash 9,586 7,020 7,821  
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows $ 45,083 $ 20,293 $ 27,031 $ 27,552